ISASCII(3) NEWLIB ISASCII(3)NAME
3.3 `isascii'--ASCII character predicate
SYNOPSIS
#include <ctype.h>
int isascii(int C);
DESCRIPTION
`isascii' is a macro which returns non-zero when C is an ASCII charac‐
ter, and 0 otherwise. It is defined for all integer values.
You can use a compiled subroutine instead of the macro definition by
undefining the macro using ``#undef isascii''.
RETURNS
`isascii' returns non-zero if the low order byte of C is in the range 0
to 127 (`0x00'-`0x7F').
PORTABILITY
`isascii' is ANSI C.
No supporting OS subroutines are required.
SEE ALSO
isascii is part of the library. The full documentation for is main‐
tained as a Texinfo manual. If info and are properly installed at your
site, the command
info
will give you access to the complete manual.
NEWLIB April 2010 ISASCII(3)